package com.example.dormmanage.service.impl;

import com.alibaba.fastjson.annotation.JSONField;
import com.example.dormmanage.entity.Admin;
import com.example.dormmanage.entity.Student;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;

@Data
@NoArgsConstructor
public class LoginUser implements UserDetails {

    private Student student;

    private Admin admin;

    //存储权限信息
    private List<String> permissions;


    public LoginUser(Student student, List<String> permissions) {
        this.student = student;
        this.permissions = permissions;
    }

    public LoginUser(Admin admin, List<String> permissions) {
        this.admin = admin;
        this.permissions = permissions;
    }

    //存储SpringSecurity所需要的权限信息的集合
    @JSONField(serialize = false)
    private List<GrantedAuthority> authorities;

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        if (authorities != null) {
            return authorities;
        }
        //把permissions中字符串类型的权限信息转换成GrantedAuthority对象存入authorities中
        authorities = permissions.stream()
                .map(SimpleGrantedAuthority::new)
                .collect(Collectors.toList());
        return authorities;
    }

    @Override
    public String getPassword() {
        if (student == null) {
            return admin.getPassword();
        } else {
            return student.getPassword();
        }
    }

    @Override
    public String getUsername() {
        if (student == null) {
            return admin.getUserName();
        } else {
            return student.getUserName();
        }
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}